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Portail d'information géographique

Résultats de la recherche (70 résultats)

Variation of rock fragment cover and size along semiarid hillslopes : a case-study from southeast Spain

Variation of rock fragment cover and size along semiarid hillslopes : a case-study from southeast Spain
This study focuses on southeast Spain, the driest area of Mediterranean Europe. Vegetation cover is low during summer and surface rock fragments are very important in stabilising the soil surface and therfore play a crucial role in the response
1998

Slope form and associations with ground boulder cover in arid environments, northeast Jordan

Slope form and associations with ground boulder cover in arid environments, northeast Jordan
1998

Slope hydrology triggered by cover-beds. With an example from the Frankenwald Mountains, northeastern Bavaria

Slope hydrology triggered by cover-beds. With an example from the Frankenwald Mountains, northeastern Bavaria
1998

Meteorological observations 1997 at the Arctic Station, Qeqertarsuaq (69°15'N), Central West Greenland

Active layer ; Arctic Region ; Climate ; Climatic data ; Cold area ; Greenland ; Permafrost ; Sea ice ; Snow ; Snow cover
An automatic meteorological station has been operating at the Arctic Station (69°15'N, 53°31'W) in West Greenland since 1990. This paper summarizes meteorological parameters during 1997, including snow and sea ice cover, ground temperatures
1998

A covering tour model for planning mobile health care facilities in Suhum District, Ghana

A covering tour model for planning mobile health care facilities in Suhum District, Ghana
1998

Satellite-derived vegetation index and cover type maps for estimating carbon dioxide flux for arctic tundra regions

Satellite-derived vegetation index and cover type maps for estimating carbon dioxide flux for arctic tundra regions
1998

Az Aggteleki-karszt felszínalaktani jellemzése

The most characteristic landforms of the Aggtelek Karst Region are the followings : a. karstic microforms : free karrs, covered karrs ; b. landforms of the karstic water conduit : sink holes, dolines of solution, uvalas, karstic dry valley with row
1998

On the influence of boundary Pixels in the unsupervised classification process of remote sensing images

the limits of terrain parcels with different land cover, especially vegetal one. - (E. Rusen).
1998

Applied climatology

to amelioration of urban impacts on local climate, and to improved design of the urban landscape, are also covered.
1998

Some factors affecting regional differentiation of the soils in the Republic of Benin (West Africa)

information content of the published 1:200,000 soil map of Benin. Regional differences in the soil cover are clearly revealed. Soil provinces roughly correspond to the known geomorphologic units of Benin.
1998

Early stages of podzolisation in young aeolian sediments, western Jutland

Soil formation in young aeolian sediments covered with pine and spruce was studied in an afforestation area in western Jutland, at Hvidbjerg Klitplantage, Thy District. The investigations have shown that in a cool temperate climate podzolised soils
1998

Development of correction chain for multispectral airborne video camera data for natural resource assessment

for digital video data acquired with an uncalibrated four-band video camera system. The study area was alpine foreland between Munich and the german Alps. In order to test the necessity of the environmental corrections overall, a digital land cover
1998

The development of coastal dunes and their vegetation in Finland

This work treats the costal dune fields in Finland in their entirety, from the shoreline morphodynamics to the effectively stabilizing forest cover. The aim is to explain the evolution of these coasts during the present century and the most
1998

Blurred Boundaries : humanism and social science in historical geography

A revisitation and expansion on the different conceptions of historical geography offered by Donald Meinig and Carville Earle in the American Historical Review (1978). To Meinig historical geography was humanistic and covered the whole realm
1998

Océanographie satellitale

Ice cover ; Image analysis ; Observation network ; Ocean ; Remote sensing ; Research technique ; Satellite ; Scale ; Surface temperature
1998

Morphology and weathering trends of the Sangamon soil complex in South-Central Indiana in relation to paleodrainage

This study evaluates the influence of paleodrainage, as inferred from soil morphology, on the genesis of the Sangamon soil complex in a Wisconsinan loess-covered landscape in the Flatwoods region of south-central Indiana. The Sangamon soilscape
1998

Distribution of large woody debris along the outer bend of meanders in the Ain River, France

The distribution of large woody debris (LWD) was studied along the concave outer bend of 3 meanders in the Ain River. The Ain River is a sixth-order channel dominated by a gravel-cobble bed substrate that meanders through a floodplain covered
1998

Effect of saltating sediment on flow resistance and bred roughness in overland flow

This study has evaluated the effect of saltating sediment on flow resistance and bed roughness in overland flow on a fixed sand-covered bed. It is concluded that saltating sediment has a considerable impact on overland flow hydraulics, at least
1998

Adekvatnost' avtomatizirovannyh metodov kartografirovaniâ pri analize polej snežnogo pokrova

Automated mapping ; Former USSR ; Geographical information system ; Russia ; Snow ; Snow cover
1998

Metody analiza prostranstvennoj izmenčivosti snegozapasov

Altitude ; European part of Russia ; Mathematics ; Numerical analysis ; Snow ; Snow cover ; Spatial distribution ; Water ; Watershed
1998